Cromrich, L.A., D.W. Holt, and S.M. Leasure. 2002. Trophic Niche of North American Great Horned Owls. Journal of Raptor Research 36: 58-65.

Holt, D.W. and W.N. Tiffney. 2001. A Yellow Wood Lily, (Lilium Philadelphicum), from Nantucket Island, Massachusetts, with Notes on its Occurrence in New England. Canadian Field-Naturalist 115: 351-352.

Holt, D.W. and S. Drasen. 2001. Early Nesting by Great Horned Owls in Montana. Journal of Raptor Research 35: 66-67.

Becker, D.M. and D.W. Holt. 1982. A Survey of Raptor Breeding Activity and Habitat Utilization along the Missouri River in North-Central Montana; with Special Emphasis on Peregrine and Prairie Falcons. Montana Power Company Report, Butte, Montana, 43 pages.

Holt, D.W. The 2005 to 2006 Snowy Owl Irruption Migration to Western Montana.

Holt, D.W. Natal Philopatry in Female Long-eared Owls.

Holt, D.W. Eye Injuries in Long-Eared Owls: Prevalence and Survival.

Gniadek, S.J. and D.W. Holt. First Nest Record and Current Status for the Northern Hawk Owl (Surnia ulula) in Montana; with Notes on Behavior and Food Habits.

Nikula, B.J. and D.W. Holt. Northern Harrier. In T.W. French and J.E. Cardoza (eds). Endangered, Threatened, and Special Concern Vertebrates of Massachusetts. Massachusetts Division of Fisheries and Wildlife.

Holt, D.W. Long-eared Owl. In T.W. French and J.E. Cardoza (eds), Endangered, Threatened, and Special Concern Vertebrates of Massachusetts. Massachusetts Division of Fisheries and Wildlife.

Holt, D.W. and S.M. Melvin. Short-eared Owl. In T.W. French and J.E. Cardoza (eds), Endangered, Threatened, and Special Concern Vertebrates of Massachusetts.Massachusetts Division of Fisheries and Wildlife.